Adjustable saddle for top rolls.



L. S. BACHE. ADJUSTABLE SADDLE FOR TOP ROLLS. APPLICATION FILED SQPLZS. ISM.

Patented Sept. 26,1916.

/NVENTOB Lay]: AS: Basile,

ATTORNEY WITNESSES LEIGH S. BACI-IE, OF BOUNDBROOK, NEW JERSEY, ASSIGNOB TO BOUND BROOK OIL-LESS BEARING COMPANY, OF BOUNDBROOK, NEW JERSEY, A CORPORATION OF NEW JERSEY.

ADJUSTABLE SADDLE FOR TOP ROLLS.

Specification of Letters Patent.

Patented Sept. 25, 1916.

Application filed September 23, 1914. Serial No. 863,113.

To all whom it may concern I Be it known that I, LEIGH S. BACHE, a citizen of the United States, and a resident of Boundbrook, in the county of Somerset and State of New Jersey, have invented certain new and useful Improvements in Adj ustable Saddles for Top Rolls, of which the following is a full, clear, and exact description, whereby any one skilled in the art may make and use the same.

The invention relates to a device commonly known as a saddle which is designed to be superimposed upon the top rolls of a set of drawing rolls of a spinning frame The invention relates particularly to an improved device for tensioning the top rolls which consists essentially in an arrangement for locating the weight-strap so that it may be adjusted to any desired degree.

The top rolls of spinning machines of necessity have to be adjusted with reference to the front or delivery roll to adapt them to the varying character and condition of the roving, sliver or filament and when a change is made in the position of the rolls to provide for the difierent character of drawing necessary for any given material, it is necessary to vary the pressure exerted on the top rolls by the tension device, so that it will exert a proper pressure upon each of the rolls according to their adjustment.

The object of the present invention is to provide a very simple device for adjusting a tension upon the saddle.

A further object is to provide an adjustment which will give a definite fixed adjustment for two positions and a great number of adjustments of more delicate character for each of the two fixed adjustments of the adjusting device.

Referring to the drawings: Figure 1 is a diagrammatic view in side elevation of the top rolls of a spinning machine with a twopart saddle and the improved tensioning device" in place. Fig. 2 is a fragmentary plan view of the saddle and adjusting device forthe tension. Fig. 3 is a similar fragmentary view illustrating the adjusting plate in reversed position as compared with Fig. 2. Fig. 4 is a similar fragmentary view showing a further adjustment of the strap and adjusting plate. Fig. 5 is a perspective view of the forward member of the saddle with its contained adjusting plate. Fig. 6 is a fragmentary perspective view of the stirrup showing the serrated face which engages the ad usting plate of the saddle. Ordinarily when one of the rolls of a set of drawing rolls is dropped out or changed in position, there has been employed a means for shifting the stirrup upon which is suspended the tensioning weights or devices for securing a proper tension between the rolls. These devices have been varied in character and form and have been nominally effective for securing adjustments between the two or more definite positions required for a change of rolls.

The present invention contemplates an adjusting device which will have two main fixed adjustments and practically an infinite number of intermediate adjusting points or positions, all of which may be secured by a simple manipulation of a single plate or like member formed to give this maximum number of adjustments.

Referring to the drawings the numerals 1, 2, 3 indicate the upper rolls of the set and a, 5 and 6 the cooperating driven rolls.

As illustrated in the drawings the saddle consists of two parts, one part 7 rests upon the rolls 2 and 3, while the second part 8 rests upon the roll 1 and is in engagement with the saddle-part 7.

In order to secure a proper tension upon the rolls 1, 2 and 3 with reference to the cooperating rolls l, 5, 6 there is provided a stirrup 9 which is drawn down either by weight or other suitable tensioning devices not specifically illustrated in the drawings. This stirrup 9, as illustrated, has a perforation'lO which permits it to fit over the saddle-member S and as there is always a downward pull upon the stirrup, it will tend to force itself toward the forward end of said saddle-member S. In order to provide'for a proper positioning of the stirrup upon said member, there is employed a plate 1.1 which, as illustrated in Figs. 1 to 3, inclusive, is of substantially oblong form having rounded ends 12, 13. This plate 11 is pivoted upon the saddle member 8 and may be securedin any definite position with reference thereto by a locking screw or similar device 1a and as illustrated in Figs. 1 to 3, this plate has upon its end a series of notches or teeth or serrations 15 suitably formed to engage one edge of the stirrup 9 adjacent to its perforation 10. The plate itself is not Centrally pivoted but is con- 15 siderably longer from one end to the pivot than from the other end to the pivot. It is quite obvious that a reversal from the plate will give it definite fixed adjustment for positioning the stirrup 9 and as said stirrup rests upon the saddle member 8, a

and abuts with either one end or the other of the plate 11, it will be positioned. nearer to or farther away from the leading roll 1. This provides for a definite fixed adjustment equal to the difierence in length from the end of the block to the above point. In order to secure intermediate and more delicate adjustments, the plate may be slightly turned when either end is in abutting position with reference to the stirrup 9 so that said stirrup will engage either one or the other of the serrations 15. It is quite obvious from this arrangement that a rotary adjustmentof the plate will be efiective in giving almost an infinite number of positions for the stirrup so that the weight may be delicately adjusted to givethe required 7 tension upon the several rolls.

In lieu of teeth for engaging the stirrup member 9, the plate 11 may have its opposite ends serrated as illustrated at 15, 16 of Fig. 5 and if desired, the face of the stirrup may be impressed 'with corresponding serrations 17 so that no matter what the position of the circular ends of the plate, its serrations will engage and hold the stirrup 9 in any desired position of forward and lateral adjustment. The position of the plate will of course depend on the longitudinal. or forward adjustment and the serrations will prevent sidewise slip of the stirrup with reference to the saddle. It will be observed that the curvature in the ends of the plate, whether it be serrated or of definite tooth form will, when the plate is rotated, give different adjustments for the stirrup.

The exact tooth or serrated form is quite immaterial to the invention as it is apparent that in one case, the teeth will provide definite holdingrfaces to engage the sides of Copies of this patent may be obtained for the stirrup adjacent to the perforation or the serrated ends will give a more universal and more delicate adjustment. Either-form will prevent side shifting of the stirrup with reference to the saddle member.

What I :claim as my invention and desire to secure by Letters Patent is:

1. In combination with a saddle for top rolls, a weight-strap, an adjustable tension device consisting of a rotarily adjustable plate against which said weight-strapabuts,

8. In combination with a top roll saddle,

a tensioning device embodying a plate pivotally adjusted upon. the saddle member and having its pivot arranged toward one end of the plate whereby a reversal of the plate will provide different adjustments for the stirrup and a stirrup adapted to abut against said plate.

4:.111 a tensioning device, a top roll saddle, a plate having serrated ends, said plate being rotarily adjustable upon the,

saddle member and a stirrup resting upon the saddle member and arranged to abut against a serrated end of the plate.

5. In a tensioning device, a top roll saddle, a plate having serrated ends, said plate being rotarily adjustable upon the saddle member and a stirrup resting upon; the saddle member and arranged to, abut againstthe serrated end, said stirrup hav' ing serrations engaging the serrated endsv of the plate.

LEIGH S. BACHE. Witnesses: L, V. RonssnAu, W. F, JENNINGS.

five cents each, by addressing the-00mmissioner of Patents, Washington, D. C. 

